For added security, we bought two of these lights- one for a dark area in the backyard, and one for the driveway.
I just installed the one in the backyard. It took less than ten minutes to install and less than five to adjust the sensor area.
The motion sensor has great range, and the LEDs are sufficient to light up the whole area (about 18X18 ft.) The light pops on quickly and goes off when it's supposed to.
The price is incredible at $19. We had seen many others of a similar design advertised for $30.
If you have a dark area that needs to be lighted without wiring, I very much recommend this product.